Here's my exhaust pack that includes:
Boom tube,Glasspack,Twin Muffler,Regular Muffler,Sidepipes,Flexpipes,Straight pipe15 Degree Pipe45 Degree Pipe90 Degree PipeX-Pipe (for boom tube)
STL (Stereolithography, filesize: 1.22 MB), OBJ (OBJ, filesize: 1.22 MB), BLEND (Blender, filesize: 1.22 MB), FBX (Autodesk FBX, filesize: 1.22 MB)